Press



W. E. KSS

Dea-3, 1.

PRESS Filed Sept. 6, .1938 5 Sheets-Sheet l Dec. s, 1940. w E RASS 2,224,054

PRESS Filed sept. 6L 1958 s sheets-sheet s Patented Dec. 3, 1940 y l `UNITED s STATES PATENT FFICE PRESS Walter Eduard Kss, Amsterdam, Netherlands Application september s, 193s, serial No. 228,656 In the Netherlands September 14, 1937 8 Claims. (Cl. 'M -40) The invention relates to a press, especially stamp is being opened and closed, that is to say adapted to the pressing of fibrous articles such Whilst a reduced power is required to drive' the as trays or dishes destined for fruit or meat in stamp, it travels over a long course, whereas `Which at least one guiding means is connected during the time when great power acts on the with the frame of the press or with another cooperating guiding means, said means only trav- 5 fixed part and at least one cooperating guidel over a small course with reference to each ing means is connected with the driving means other. of the stamp. Furthermore, the advantage is obtained of The main object of the invention consists in` being able to put the pressing apparatus to- 10 yobtaining a new apparatus by means of which gether in such a manner that the component of 10 from fibrous substances pressed articles vof 'good the power exercised on vthe stamp and lying in quality may be rapidly obtained. the direction motion of the stamp will be very- The invention, therefore, consists primarily in great, which will allow the speed of the press a pressing device comprising stationary guiding to be further increased, or yto manufacture betmeans and cooperating guiding means connected ter quality articles. 15"

with the driving means of the stamp for open- According to the invention, the cooperating ing and closing the stamp, cooperating guiding guiding means, displacing the driving means, means for keeping the stamp in its closed posimay consist of a slide, and a cam moving extion during some time, said Vcooperating.' means teriorly `or interiorly in it the one being movbeing independent of the cooperating means for ably or not adjusted to the driving means the 20 opening and closing the` stamp and means for other to the frame or to another xed part the driving the stamp, said stamp driving means becooperating guiding means for keeping up the ing'independent of the two sets of cooperating pressure may consist of a cam and pawl said guiding means. In consequence of the indepawl bearing at one extremity against the cam pendence ofthecooperatngguiding means and and at the other against the hub of the driv- 25 of the driving means of each other the time Itaken ing means or to guiding means adjusted thereto. for opening and closing the stamp and for keep- Another favourable embodiment of the' press ing the stamp in its closed ,position may be di according to the invention is characterised in vided as desired over the whole revolution of that vthe bearing surface of the driving means the press. It is consequently possible to shape and thek pawl is eccentric with respect to the 30 the guiding means pertaining to Ithe opening centre of rotation of the driving means of the and closing of the stamp in such a manner that stamp the cam and pawl being shaped in such the opening and closing of the stamp only takes a manner that the stamp after having reached a very short while so that a large partof each the end of its stroke carried out by the cooprevolution of the press can be used to keep the erating guiding means for opening and closing 35 pressure up. In order -to obtainpressed fibrous the stamp still moves on a. little so as to provoke articles of goedy quality a minimum of time is rethe additional pressure, and remains for some quired et el Certain DIeSSuI'e during Which time ,time in that position. As the pressure is con- Sad pressure must be kept up aS OtheIWSethe siderably increased its duration may be cut 40 pressed articles do not keep their shape well. down 40 Qwing to the fact that'according to Ithe inven- The driving means of the stamp may accord non a' Very large part of each revolutlon of the ing tothe invention be ,also connected with the the stamp, consequently the apparatus will funcmg'means for dmvn-1g It being made so that the tion very rapidly. Crank may be put 1n or nearly 1n the produc- According to the invention the' apparatus may non o? the Stamp and that 1t can remam for be so Constructed that the cooperating -guid some time in said posit1on sa1d crank cooperating means, for opening and closing the stamp ing t0 the upkeep 01" Causing the Stamp Prestravel over a considerable course during the Sure With One 01' more 'guiding means flXed t0 50 opening and closing of thestamp, whereas the the frame When the Crank iS placed in the cooperating guiding means for keeping the stamp production 0f the Stamp and especially When the in its closed position cover'a Vcourse which is as crank still moved a little further the driving short as .,possible.. Thus,.the.losses due to-frcmeans will not becalled upon yto exert any or tion fare'greatly reduced. Evidently, Iwhilst'the onlyvery little powerxonthe crank and by that 55 very fact the losses due to friction will be very small.

Further owing to the suitable embodiment of the press according to the invention the guiding means cooperating with the crank may consist of a rotary rod connected with the crank said rod being also adjusted to the frame or to another xed part.

According to the invention the crank may be eccentrically connected to the driving means of the stamp thereby obtaining that the stamp will move on a little so as to provide or increasev the pressing pressure at the time when the one end of the driving rod of the stamp remains in its position.

According to the invention a-simple apparatus with a reduced number of mobile parts is obtained owing to the fact that the driving means of the stamp is fitted with a cam roll or a suchlike means moving on the one hand :in a sliding means adjusted to the frame or to another iixed part and on the other hand in a sliding means adjusted to the stamp-carrier.

In said embodiment the pressure on the arti- -cle to be pressed carried out by the stamp-carrier, will only be kept up during the desired time. If, however, one wishes to increase said pressure, the press may be so constructed that the roll, cam, or suchlike means consist of several parts and that the sliding means being con-r nected with the stamp-carrier is or are eccentric with regard to the other part or parts.

In order that the invention may be more fully understood there will now be described by way of example and with the aid of the accompanying drawings, three constructional forms which the invention may assume.

Figure 1 is a side elevation View partially in section showing a part of an embodiment of the invention.

Figure 2 shows a schematic section of the press according to Figure 1.

Figure 3 is a vertical view of a part of another embodiment of the invention seen to the right of the line IV-IV of Figure 4.

, Figure 4 shows a section of this part of the press.

Figure 5 shows a vertical view of that part of the press seen to the left of the line IV--IV of Figure 4, and in which the connecting rod is in another position.

Figure 6 shows a detail.

Figure 7 shows a part of another embodiment of the invention.

The press shown in Figures 1 and 2 comprises a driving rod I being rotary connected in 2 with the stamp-carrier which is not shown. Said driving rod is provided with a slot 3 in which moves the crank pin II of the crank disc 6 saidl crank disc being driven by the shaft 5. Said crank pin is provided with a sliding block 1 so as to reduce the losses due to friction. The driv-l ing rod I is Aalso fitted with a roller 8 which moves in a slide I IJ fixed on the frame 9 serving as guiding means for the roller 8. During the motion of the. roller 8 inthe slide I0 the driving rod and the stamp-carrier are moved. It is clear that the slide IU may be fixed to the driving rod I and the roller 8 to the frame 9 while for driving the press one is not tied to crank driving means. i

The frame IU is provided with a cam II against which the extremity I2 of a pawl I3 is pulled by a spring I4 xed at the extremity of this pawl. This spring I4 is connected all? its other end With a movable point as for instance to a rod xed to the hub of the driving rod. This pull of the pawl takes place when the driving rod is in position II. The other end I5 of this pawl I3 is hook-shaped and is hooked on over the hub I6 of the driving rod I or to another means connected with said driving rod.

The press Works as follows:

When the driving rod I is in the position indicated in Fig. l by means of dotted lines the the roller 8 will travel upwards in the slide I9 because of the rotation of driving shaft and as a consequence of this movement the end of the driving rod adjusted to the stamp-carrier will move towards the left. When the driving rod I is in position II that is to say after degrees of the stroke` of the crank the extremity I2 of the pawl I3 rests against the cam I I of the frame 9 whilst the driving rod I has pressed the stampcarrier against the article to be pressed operation by means of which the object has received the desired shape.

The driving rod I now moves from position II to position III. Owing to the fact that the bearing surface of the driving rod I and the pawl is eccentric with respect to the centre of rotation of the'driving rod I and the stamp-carrier the latter is still able to move a little. The extremity I2 of the pawl I3 is shaped in such a manner that it rolls along the cam II whilst the end I5 of the pawl I3 rolls on the hub I6 of the driving rod I. This operation is performed simultaneouslyY with the rolling of the end I2 along the cam I I. Owing to this construction the pawl I3 in cooperation with the hub IB and the cam lI will exert an additional pressure which will be kept up during the movement of the driving rod from position II towards position III and vice versa. Said pressure will therefore be maintained during degrees of the stroke of the crank. Eventually one may shape the cooperating guiding means 8, ID, I2 and I3 in such a way that it is possible to maintain the pressure during a greater or smaller part of the stroke of the driving rod. It is clear that the bearing surface of the pawl I3 with the driving rod I need not necessarily be eccentrical with respect to the centre of rotation of the driving rod. In that case no additional pressure is obtained.

As 'is clearly shown by the foregoing the roller 8 travels over a very long course during the opening and closing of the stamp. As the power required for opening and closing the stamp is very small the'losses due to friction will be very small. The displacement of the cooperating guiding means with reference to each other is very small whilst the ypressure is kept up owing to this fact notwithstanding the great power used the losses due to friction will be small. These will be further lessened owing to the fact that the cooperating guiding means roll the ones on the others.

When the driving rod YI has returned to position II it draws with ity by means of a cam or other means the pawl I3 to position I.

Figures 3, 4, 5 and 6 show a part of the second embodiment of the press according to the invention comprising cooperating guiding means consisting of a slide 20 in which moves a roller 2I the slide being adjusted to the frame or to any other fixed part and the roller to the driving rod.

The driving rod 25 is not directly connected with'the stamp-carrier 21 but by means of a rod 26 which is joined on the one hand to the stampcarrier whichV is guided'between parallel slides andA on the -other hand tto Vthe `driving vrod 25.` Said connection of .the driving Yrodi=25i `Withthe rod 26 will preferably be an eccentric` one.`

Thispress is driven by vmeans of afshaftY 28 and' acrank disc 29 withrthe crank pin 430l or by any other known means.

In the position'I of the driving rod"25 the roller 2| connected with `said driving rod 25 is`to be found at the lowermost part of the slide 2l). As soon as the press-is set inmotion the roller- 2l rises in .the slide 20: by Ithis movement'it rises said extremity of; the driving rod25fwhich` is connected with the, rods: 23 and '226. Owing toV this movement in position II the rods 23 and '26 come in the production of eachother or nearly so by which the article is pressedr into the desired shape. Owing to the fact that the'shaft 3|"is eccentrically connected the movement of the driving rod 25 from position II towards position III will cause the'stamp-carrier to move still somewhat towards the left thus exerting an additional pressure on the'article to be pressed.

`The'part of the slide between the lines II and III has the shape of an arc of a circle or nearly so because thefadditional pressure as well as its maintenance are effected by meansof the rods 23 and 25. In this'case the'roller-'2I moves freely in the slide 20. By increasing or diminishing the slope o'f the slide or of the guiding means between positions I and II indicated by dotted lines one can increase or rdiminish the opening and closing speed of the stamp withthe result that a greater or lesser part of the stroke will be available for'keeping up `an eventually increased pressure.

It is clear thaty the shaft 3 I need not necessarily be eccentrically connected and that the guiding means may also be of such a shape that the driving rod will be able'to` set" the stamp inmotion until the end of its course and' consequently that the guidingy means will keepthe stamp in place during a greater or lesser time during the stroke of the driving rod so as tokeep up the pressure for a time after the movement of the stamp being necessary to obtain the desired shape.

Should one wish to decrease the number of mobile parts of the above mentioned embodiment one can adjust a cam roller or other means 33 Fig. 'Y-to the driving rod said cam roller or other means will work on the one hand in a guiding means 34 being movably or not adjusted to the frame or to another xed part and on the other hand to a sliding means 35 adjusted to the stampcarrier. i

By setting the driving rod in action by means 33 corresponding with the guiding-groove 20 and to the roller 2l shown onFigure 3 said means 33 will rise in the slot 34 and will carry with it the stamp-carrier which will open. The return movement of the driving rod will press the stampcarrier back. Thev means 33 will remain in place in the guiding means for the upkeep of the pressure during a period of time previously determined.

`The mobile parts of the means 33 which move in the guiding means may be separated owing to this fact one of these parts may be eccentrically connected with the driving rod. It will thus on the one hand be possible to decrease the friction and on the other hand to increase the pressure a little.

Having thus described my invention, what I claim is:

1. A press especially adapted to the pressing of brous articles such as trays or dishes destined of fibrous articles 'such as trays or 3 for fruit. or meat comprising stationary guiding means and cooperating guiding means connected with the driving means ofthe stamp for opening and closingthe stamp, cooperating guiding means for keeping the stamp in its closed position during some time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving thestamp, said stamp driving means being independent of the two sets of cooperating guiding meansthe cooperating means for opening andclosing the stamp com rising `a slide and a cooperating cam yand the cooperating guiding means for keeping the stamp in its closed position comprising a cam and pawl, said pawl bearing at one extremity against the cam and at the other against a part of the driving means.

2. A press especially adapted to the pressing dishes destined for fruit or meat comprising stationary guiding means and cooperating guiding means connected with lthe driving means of the stamp for opening and closing the stamp, cooperating guiding means for keeping the stamp in its closed position duringsome time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving the stamp, said stamp driving means being independent of thetwo sets of cooperating -guiding means, the cooperating means for opening and closing'the stamp comprising a slide and Y a coopera-ting cam and the cooperating guiding means for keeping the stamp in its closed position comprising a cam and pawl, said pawl bearing at one extremityv against the cam and at the other against a part of the driving means, the bearing surface of said part 'of the driving means with the pawl being eccentric with regard to the fixing of the driving means to the stamp.

3. A press especially adapted to the pressing of brous articles such as trays or dishes destined for fruit or meat comprising stationary guiding means and cooperating guiding means connected With the driving means of the `stamp for opening and closing the stamp, cooperating guiding means for keeping the stamp in its closed position during some time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving the stamp, said stamp driving means being independent of the two sets of cooperating guiding means, the cooperating means for opening and closing the stamp comprising a slide and a eooperating cam and the cooperating guiding means for keeping the stamp in its closed position comprising a crank capable of being brought by the driving means in the production of the stamp.

4. A press especially adapted to the pressing of brous articles such as trays or dishes destined for fruit or meat comprising stationary guiding means and cooperating guiding means connected with the driving means of the stamp for opening and closing the stamp, cooperating guiding means for keeping the stamp in its closed position during some time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving the stamp, dependent of the two sets of cooperating guiding means, the cooperating means for opening and closing the stamp comprising a slide and a cooperating cam and the cooperating guiding means for keeping the stamp in its closed position comprising a crank capable of being brought by the driving means in the production of the stamp, a rod being rotatably attached on one hand to said crank and on the other hand being also rotatably attached to a stationary part.

5. A press especially adapted to the pressing of brous articles such as trays or dishes destined for fruit or meat comprising stationary guiding means and cooperating guiding means connected with the driving means of the stamp for opening and closing the stamp, cooperating guiding means for keeping the stamp in its closed position during some time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving the Stamp, said stamp driving means being independent of the tWo sets of cooperating guiding means, the cooperating means for opening and closing the stamp comprising a slide and a cooperating cam and the cooperating guiding means for keeping the stamp in its closed position comprising a crank capable of being brought by the driving means in the production of the stamp, a rod being rotatably attached on one hand to said crank and on the other hand being also rotatably attached to a stationary part, said crank being eccentrically attached to the driving means of the stamp. i

6. A press especially adapted to the pressing of fibrous articles such as trays or dishes destined for fruit or meat comprising stationary guiding v means and cooperating guiding means connected with the driving means of the stamp for opening and closing the stamp, cooperating guiding means for keeping the stamp in its closed position during some time, said cooperating means being independent of the cooperating means for opening and closing the stamp and means for driving the stamp, said stamp driving `means being independent of the two sets of cooperating guiding means, the cooperating means for opening and closing the stamp comprising a slide and a cooperating cam and the cooperating guidingrneans for keeping the stamp in its closed position comprising a crank capable of being brought by the driving means in the production of the stamp, a

slide being attached to a stationary part and guiding the connecting point of the'crank and ing some time, said cooperating means beingin'' dependent of the cooperating means for opening and closing the stamp and 'means for 4driving the stamp, said stamp driving means being in' dependent ofthe two sets of cooperating guiding means,` the cooperating meansy for opening and closing the stamp comprising a slide and .acooperating cam and the cooperating'` guiding means for keeping the'stamp in its closed posi# tion comprising a part moving on the one hand' in a slide of a stationary part and on the other hand in a slide of the stamp carrier.

8. A press especially adapted to the pressing" of fibrous articles such as trays or dishes destined for fruit or meat comprising stationary guiding means and cooperating guiding means connected with the driving means of the stamp for open ing and closing the stamp, cooperatingguidingl means for keeping' the-stamp in its closedposi# tion during some time," said 'cooperating means being independent of the cooperating means for` opening and closing the .stamp and means for driving the stamp, said stamp driving means being independent of the two setsofv cooperating guiding means, the cooperating means for opening and closing the stamp comprising a slide and a cooperating cam and the cooperating guiding means for keeping the stamp in its closed position comprising a part moving on the one hand in a slide of a stationary part and on the other hand in a slide of the-stamp carrier, said part being subdivided, one' of said subdividedparts being eccentric with regard to a remaining part.

WALTER EDARD 

